If you can read this, either the style sheet didn't load or you have an older browser that doesn't support style sheets. Try clearing your browser cache and refreshing the page.

(Daily Mail)   New technology lets you charge your phone with a cold can of beer. Beer: Is there anything it can't do?   (dailymail.co.uk) divider line 24
    More: Cool, stirling engines, cup of coffee, working prototype, waste heat, New Castle  
•       •       •

3134 clicks; posted to Geek » on 16 Feb 2013 at 9:56 PM (1 year ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



24 Comments   (+0 »)
   
View Voting Results: Smartest and Funniest

Archived thread
 
2013-02-16 09:39:51 PM  
Yeah but it'll warm your beer up
 
2013-02-16 09:59:26 PM  
To get much power from  his, doesn't this... doesn't this defeat the purpose of warming a cup of coffee or drinking a cold beer in the first place?
 
2013-02-16 10:16:41 PM  
Great.

Now I have to start drinking to get my phone charged.

Thanks Obamacare!!!
 
2013-02-16 10:17:00 PM  
I realize this is just one of those "look how freakin cool science is" kind of things but $100 for something that will never generate 1/50th that cost in electricity...  I dunno, seems like a huge waste.
 
2013-02-16 10:46:40 PM  
It's a great thing, until you SPILL YOUR BEER ON YOUR $500 PHONE!

/Christ, what a stupid invention.
 
2013-02-16 10:55:15 PM  

ajgeek: It's a great thing, until you SPILL YOUR BEER ON YOUR $500 PHONE!

/Christ, what a stupid invention.


That and who the fark is going to spend that kind of cash to get a coaster that can charge their phone when they could buy 10 normal chargers for the same price?
 
2013-02-16 11:24:49 PM  

davidphogan: ajgeek: It's a great thing, until you SPILL YOUR BEER ON YOUR $500 PHONE!

/Christ, what a stupid invention.

That and who the fark is going to spend that kind of cash to get a coaster that can charge their phone when they could buy 10 normal chargers for the same price?


You may be underestimating the number of hipsters with more money than brains
 
2013-02-16 11:37:43 PM  

MaudlinMutantMollusk: davidphogan: ajgeek: It's a great thing, until you SPILL YOUR BEER ON YOUR $500 PHONE!

/Christ, what a stupid invention.

That and who the fark is going to spend that kind of cash to get a coaster that can charge their phone when they could buy 10 normal chargers for the same price?

You may be underestimating the number of hipsters with more money than brains


I live in Portland, I'm surrounded by them.  They like gadgets, but this is too stupid for almost all of the ones I've met.
 
2013-02-16 11:42:51 PM  
I remember seeing a similar product a few years back.  A little roundish thing you held in one hand that had a cord to hold in the other.  Hold your phone and charger in the left hand, grab the handle with the right, and start yanking on it like your trying to start a lawnmower.  It was advertised as five minutes of charging giving a phone a 2 - 3 hours of operation.

It'd be annoying to try to keep the phone charged 24/7 but if you were going camping or overseas and don't have the right plug or adapter, then I could see it coming in handy.  The other downside is that it was advertised as charging a flip phone, so it'd last even less time trying to run the screen, gps, and wifi on an iphone.
 
2013-02-17 12:09:13 AM  
Screw that. I'm not paying 73 GBP for something that will make my coffee cold or my beer warm. If I want that, I'll vacation in the UK.
 
2013-02-17 12:17:01 AM  
It apparently can't change the channel while warm.
 
2013-02-17 12:17:45 AM  
Why has no one just made a (million dollar idea)
 
2013-02-17 12:53:31 AM  
"Beer: Is there anything it can't do?"

yeah, cool itself.
 
2013-02-17 01:16:23 AM  
Hello, Father's Day present.
 
2013-02-17 01:21:29 AM  

stonelotus: "Beer: Is there anything it can't do?"

yeah, cool itself.


encrypted-tbn1.gstatic.com
 
2013-02-17 01:22:32 AM  

ajgeek: It's a great thing, until you SPILL YOUR BEER ON YOUR $500 PHONE!

/Christ, what a stupid invention.


This is one of the best purchases I've ever made.  Fully charges my phone four times and doesn't require me to run the risk of drunkenly soaking my $350 phone to do it.
 
2013-02-17 01:32:55 AM  
I doubt a Stirling engine powered by the heat from a cup of coffee will generate anything like enough energy to charge your phone.

1 cup of coffee ~.25 liters.
Temperature constant for water = 4200
Hot coffee ~ 75° . C
Room temp coffee ~ 25°  C

Q = m*c*(Ti-Tf)  Where Q = Joules released by coffee cooling from 75°  to 25° C.
Q = .25kg*4200(75° -25° ) = 52,500 Joules.

The most efficient Stirling engine ever made has a 38.5% thermal efficiency.

If ALL the energy released by your cup of coffee (instead of just the heat from the bottom of the cup) were captured to drive the engine it would produce 20,212 Joules (around 5.6 volt ampere). Not bad.

You would not, of course, be allowed to lift your cup off of the heat exchange surface or, God forbid, drink any of the coffee, because that would be extremely inefficient.

Wait, what was that last part?
 
2013-02-17 02:18:40 AM  

red5ish: I doubt a Stirling engine powered by the heat from a cup of coffee will generate anything like enough energy to charge your phone.

1 cup of coffee ~.25 liters.
Temperature constant for water = 4200
Hot coffee ~ 75° . C
Room temp coffee ~ 25°  C

Q = m*c*(Ti-Tf)  Where Q = Joules released by coffee cooling from 75°  to 25° C.
Q = .25kg*4200(75° -25° ) = 52,500 Joules.

The most efficient Stirling engine ever made has a 38.5% thermal efficiency.

If ALL the energy released by your cup of coffee (instead of just the heat from the bottom of the cup) were captured to drive the engine it would produce 20,212 Joules (around 5.6 volt ampere). Not bad.

You would not, of course, be allowed to lift your cup off of the heat exchange surface or, God forbid, drink any of the coffee, because that would be extremely inefficient.

Wait, what was that last part?


I think the idea is to create an amusing desk accessory that just uses that waste energy for something rather than something intended to be a viable replacement for a wall charger.
 
2013-02-17 05:09:33 AM  
Waste of money. Just go out and spend £70 on cheap disposable batteries...
 
2013-02-17 09:00:49 AM  
WTF is a "cuppa"?
 
2013-02-17 09:15:26 AM  
Eh screw using coffee or beer to use it. If you live anywhere with snow in the winter. Just go outside scoop snow into a cup and there you go. Thats literally free energy.

/minus the cost of the cup
//minus the cost of the charger
///minus the cost of the charging cable
 
2013-02-17 01:24:49 PM  
Why not use a peltier junction, wired into a joule thief a capacitor and a couple of diodes?
 
2013-02-17 05:08:07 PM  
But can your cell phone cool your beer, if so I'm all in.
 
2013-02-18 03:35:12 PM  
FTFA:  'We added "onE" Puck not only to imply that it is the one solution to this problem, but also to go with our ongoing theme that Epiphany has onE vision for onE world that we all share.

Which problem is that? I read the article three times, I don't see this gadget as being a solution to anything.
 
Displayed 24 of 24 comments

View Voting Results: Smartest and Funniest


This thread is archived, and closed to new comments.

Continue Farking
Submit a Link »






Report